TETRADYNAMIA, 32? 



notched, as ThlaspU ^ 1659, and Iheris, t. 52 ; which 

 last genus is unique in its natural order in having un- 

 equal petals. Crambe^ t. 924 ; Isatis. t. 97 ; and 

 Bunias, t. 231 ; certainly belong to this Order, 

 though placed by Linnaeus in the next. 



2. Siliquosa. Fruit a very long pod. Some genera 

 have a calyx clausus, its leaves slightly cohering by 

 their sides, as Raphamis, t. 856 ; Cheiranthus, t. 462 ; 

 Hesperis, ^. 731 ; Brassica, t. 637, &:c. Others have 

 a spreading or gaping calyx, as Cardamine^ t. 1000 ; 

 Sisymbrium, t, 855 ; and especially Sinapis, t. 969 

 and t, 1677. 



Cleome is a very irregular genus, allied in habit, 

 and even in the number of stamens of several species, 

 to the Polyandria Momgynia, Its fruit, moreover, 

 is a capsule of one cell, not the real two-celled pod of 

 this Order. Most of its species are foetid and very 

 poisonous, whereas scarcely any plants properly be- 

 longing to this Class are remarkably noxious, \yy. I 

 have great doubts concerning the disease called Ra^ 

 j&Aawza, attributed by Liniiceus to the seeds of i?a- 

 phanus Raphanistrum. 



The Cruciform plants are vulgarly called antiscor- 

 butic, and supposed to be of an alkalescent nature. 

 Their essential oil, which is generally obtainable iii 

 very small qualities by distillation, smells like volatile 

 alkali, and is of a very acrid quality. Hence the foetid 

 scent of water in which cabbages, or other plants wf 

 tliis tribe, have been boiled. 



TT 



